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Re: [OM] Adobe bringing Gigapixel type function to ACR and then LR

Subject: Re: [OM] Adobe bringing Gigapixel type function to ACR and then LR
From: Wayne Shumaker <om3ti@xxxxxxxx>
Date: Thu, 18 Mar 2021 06:35:36 -0700
At 3/17/2021 10:06 PM, Moose wrote:
>On 3/16/2021 5:07 AM, Frank wrote:
>>It works on my laptop with e-1 files,
>
>Mine works now, too, after applying updates.
>
>>I processed one from 2006.
>
>Your examples are interesting. I decided to work with a test shot I took for 
>other purposes. It has the advantage of including a lot of different subject 
>matter. 
><http://www.moosemystic.net/Gallery/tech/Process/Adobe_Enhance&SuperRes/GigaP_vs_AdobeEnhance.htm>
>
>Small explanation: For reasons that are unclear, not only to me, but probably 
>to the developers, the process of training their AI Denoise made it a very 
>nice modest sharpener, or whatever you call something that makes fine detail 
>clearer.
>
>Two different Modes of Denoise are included, #2 & 3, because they have 
>different strengths. #3 is generally best on the wood frame, the texture of 
>the art paper and the money, except for artifacts in Tom's background. #2 is 
>better on the art plate.
>
>#4, ACR/LR "Enhanced" is an also ran.
>
>For the 2x enlargement, it is even trickier, with various options working best 
>for different subjects. ACR Super Resolution is again an also ran - except for 
>text, where, with a gentle assist from Focus Magic, it seems best to me. Look 
>at the seals.

Very interesting observation Moose. At first glance the Gigapixel feels sharper 
but there is added distortion. Sharp distortion does not make an image sharper, 
just crisper. I was also looking at the reflection in the glass and how that 
looks at the 2X.

Even if Gigapixel uses a neural net trained filter, it is still a form of 
interpolation. A known PSAF - Point spread autocorrelaton function - for the 
lens + system would be interesting to compare to, if it were available.

Which makes me wonder if certain lenses plus camera do better or worse with the 
AI? Besides just the subject matter. Does that depend on what the AI filter was 
trained on?

WayneS
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